Abstract: The invention provides methods and devices for detecting, identifying, classifying and characterizing particles in a fluid sample. Optical analyzers are provided having a rotating and/or translating sample container for measuring the concentrations of fluorescent particles present in very low concentrations and for characterizing fluorescent particles on the basis of size, shape, diffusion constant and/or composition. Scanning optical analyzers are provided using pattern recognitions data analysis techniques and multichannel detection.

Abstract: The invention provides methods and devices for detecting, identifying, classifying and characterizing particles in a fluid sample. Optical analyzers are provided having a rotating and/or translating sample container for measuring the concentrations of fluorescent particles present in very low concentrations and for characterizing fluorescent particles on the basis of size, shape, diffusion constant and/or composition. Scanning optical analyzers are provided using pattern recognitions data analysis techniques and multichannel detection.

Abstract: The invention provides methods and devices for detecting, identifying, classifying and characterizing particles in a fluid sample. Optical analyzers are provided having a rotating and/or translating sample container for measuring the concentrations of fluorescent particles present in very low concentrations and for characterizing fluorescent particles on the basis of size, shape, diffusion constant and/or composition. Scanning optical analyzers are provided using pattern recognitions data analysis techniques and multichannel detection.

Abstract: The invention provides methods and devices for detecting, identifying, classifying and characterizing particles in a fluid sample. Optical analyzers are provided having a rotating and/or translating sample container for measuring the concentrations of fluorescent particles present in very low concentrations and for characterizing fluorescent particles on the basis of size, shape, diffusion constant and/or composition. Scanning optical analyzers are provided using pattern recognitions data analysis techniques and multichannel detection.

Abstract: An electronic device for measuring extremely faint light emissions comprises a photomultiplier tube surrounded by a sleeve made of a material which is a good heat conductor, cooled to a low temperature and insulated from the outside, a thermally insulating and optically transparent lightguide body being stably glued to the photocathode of the photomultiplier tube to receive the light radiation emitted by a specimen to be examined, which is inserted in a cavity of a supporting structure holding a rotary body which can be turned in front of the lightguide body, so as to operate as a shutter for the lightguide in a first turned measurement position thereof to allow measurement of the dark signal and then allow, as the rotary body and the specimen held therein are turned to a second measurement position, to measure the light emission from the specimen.